Lock hinge



NOV. 22, 1949 slMMONS 2,488,688

LOCK HINGE F iled Feb. 14, 1947 (D CD 6 Q o v fi 5 1 I Q) S Q red O) o) IN VEN TOR. William, Raymond Simmons Aiforrzey Patented Nov. 22, 1949 UNITED STATES PATENT OFFICE LOCK HINGE William Raymond Simmons, Richmond, Va.

Application February 14, 1947, Serial N0. 728,513

1 Claim. 1 The present invention relates generally to hinges and more particularly to locking means for modified standard pintle type hinges.

It is often desirable to have a window, door or the like retained in an open position or a partially open position. On standard pintle type window or door hinges there is no provision for locking the hinge, to thereby hold the window, door or other closure to one of several varying degrees of open position. Accordingly, it is an object of the present invention to provide in combination with a hinge, a novel knuckle construction adapted to coact with a locking element, to thereby retain the hinge locked or set to various degrees of closure openings.

Another object is to modify a standard pintle type hinge with spaced knuckles by forming the knuckles thereof with longitudinal openings adapted to align as the hinge is turned, to thereby provide for locking the hinge at substantially any angle of turn thereof. The above and other objects and advantages of the invention will appear more fully hereinafter from a consideration of the detailed description which follows, taken together with the accompanying drawings wherein one embodiment of the invention is illustrated. It is to be expressly understood, however, that the drawing is for the purpose of illustration only and is not intended to define the limits of the invention, reference being had for this purpose to the appended claim.

In the drawings wherein like reference characters refer to like parts throughout the several views,

Figure 1 is a front elevational view of a hinge pulled apart at the knuckles prior to being joined by the pintle or pivot pin.

Fig. 2 is an elevational view of one from of looking pin for the hinge.

Fig. 3 is an assembled elevational view of the hinge with the locking pin of Fig. 2 mounted therein in hinge locking position.

Referring to the drawing in detail, there is shown in Fig. 1 a pair of hinge leaves 6 and 6a, one of which is formed with spaced apart cylindrical knuckles 5 and the other of which is formed with at least one cylindrical knuckle 5a adapted to interfit and align with the cylindrical knuckle 5. Each of the knuckles 5 and 5a are formed with a central cylindrical bore 2 for reception of the usual pintle or pivot pin 4, see Fig. 3. Also, each of the walls of the knuckles 5 and 5a of the respective leaf members 6 and 6a are formed with a plurality of elongated longitudinal openings I in a ring around the same. These openings provide a honeycomb appearance, see Fig. 1.

These openings I are preferably formed in the thickness or walls of the knuckles and are equally spaced, shaped and proportioned so as to align with each other to form conduits in any relatively turned position of the knuckles 5 and 5a. When turned and aligned the openings I of the knuckles 5 and 5a form a plurality of conduits or elongated bores adapted to receive an elongated locking member, such as the pin 3, see Figure 2.

The lock pin 3 is enlarged at one end to prevent it from falling out through the aligned openings I after insertion therein to the hinge locking position, shown in Figure 3. As illustrated the pin 3 is tapered to provide the enlarged stop end.

Thus there is provided a hinge of the usual standard form except for the added feature of the annularly disposed or ring of hinge lock openings in the knuckle walls. Obviously, the hinge may be usedin the normal way, until the occasion arises to lock the hinge to any one of a series of angular positions, to thereby lock-opena closure. When this is desired the lock pin 3 is inserted, while the closure and hinge are held at the position desired and the same remains locked, until the pin 3 is removed.

While only one embodiment of the present invention has been illustrated and described, other changes and modifications which will now appear to those skilled in the art, may be made without departing from the scope of the present invention. Reference is, therefore, to be had to the appended claims for a definition of the limits of the present invention.

I claim:

A hinge comprising a pair of leaves, cylindrical integral knuckles on one marginal edge of one of the leaves, a cylindrical integral knuckle on one marginal edge of the other of the said leaves, each of said knuckles having a. central longitudinal circular bore and a plurality of circumferential longitudinal bores surrounding said central bores, said central bores when aligned receiving a pintle pin and any of said circumferential bores when aligned receiving a lock pin.

WILLIAM RAYMOND SIMMONS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Italy Oct. 16, 1926 

